* There is a key sorting function, which has a penalty, because it sorts with natural compare, which means it is more human display, then just raw characters, but up to 100k the keys is still ok.
* There is a performance penalty for this application, given it uses AngularJS `ng-repeat` for the tree component. The best is if your application uses nested keys (something:nested:good), then the tree will be fast, but, for example, Nextcloud uses about 500 keys inline and it can take 5 seconds to generate the tree.